The Prophet ﷺ said, "An Amra performed during Ramadan equals a Hajj."
حدثنا وكيع قال قال سفيان عن بيان وجابر عن عامر
عن النبي ﷺ قال عمرة في رمضان تعدل حجة
Its isnad is sahih, it was mentioned previously at , so refer to it there for both the chain and the text.